KR20070099736A - Lamp unit and surface light emitting device using the same - Google Patents

Abstract

The disclosed invention relates to a lamp unit configured to emit light even at both ends of the linear lamp unit while being able to construct a plurality of linear lamp units in a row. The present invention is a lamp unit in which a non-light emitting section is not exposed to the lamp at both ends of the lamp by being mounted to the lamp housing while both ends of the straight-type lamp is held, the auxiliary lamp in the non-light emitting section Further installed is characterized in that the light is emitted between the length of the lamp unit by the lamp and the auxiliary lamps along the light emitting lamp.

Description

Lamp Unit and Planar Light Emitting Device Using the Same {Lamp Unit and Planar Light-Emitting Apparatus Using the Same}

Detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, in which numerals designate corresponding parts in the drawings.

1 is an exploded perspective view of a surface light emitting device using a conventional lamp unit,

Figure 2 is an assembled perspective view of Figure 1,

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an enlarged view illustrating part I of FIG. 2;

5 is a photograph showing an actual use state of the surface light emitting device shown in FIG.

6 is a schematic configuration diagram of a lamp unit according to the present invention,

FIG. 7 is a view of the auxiliary lamp viewed from the direction II of FIG. 6,

8 is a detailed cross-sectional view taken along the line B-B of FIG. 6,

9 is an exploded perspective view showing in more detail the coupling structure of the auxiliary lamp in the lamp unit of the present invention,

10 is a state diagram in which the lamp unit according to the present invention is applied to a surface light emitting device,

FIG. 11 is an enlarged view of a portion III of FIG. 10.

12 is a partial perspective view showing another embodiment of a lamp unit according to the present invention.

** Explanation of symbols for main parts of drawings **

110,120: lamp unit 112,122: finish

114,124: Lamp housing 130,140: Lamp

150: auxiliary lamp 152: substrate

154 light emitter 156 adhesive

158: wire 160: light guide plate

162: accommodation home

The present invention relates to a linear lamp unit, and more particularly, to a lamp unit configured to be able to configure a plurality of linear lamp units in a row and then use the linear lamp unit at the same time can emit light even at both ends that the linear lamp does not shine. It is about.

In general, various kinds of display apparatuses for advertisement or advertisement are installed indoors or outdoors. In order to attract people's attention to propaganda or advertising film (hereinafter referred to as 'advertising film'), a back light is mainly used to transmit light from the back to make it look bright. Recently, a surface light emitting device (hereinafter referred to as "surface light emitting device") using a light guide plate as a backlight device of a commercial film or as a plane light source device has attracted attention. This device can provide a uniform distribution of brightness over the entire plane, so that no spots appear on the advertising film placed on the light guide plate, and the luminance of the light emitting surface is excellent, and as a light source, it has a long life and high brightness as a cold cathode fluorescent lamp (CCFL). The market has been steadily expanding due to its long life span.

 In the surface light emitting device, there is a direct method of direct lighting by placing a lamp under the back of the light guide plate and an edge method of placing a lamp on the side of the light guide plate and injecting light to the side to emit light toward the front of the light guide plate. The method can make the thickness of the device thinner, which may be more suitable when a slim advertising device is desired. The components of the edge type surface light emitting device are largely divided into a frame, a light guide plate mounted on the scattering light, and reflecting the light incident to the side to emit light forward, and a light source device for incident light to the side of the light guide plate.

The present inventors have proposed an invention using an edge-type light source device and using it as a light source of a light emitting device (see Korean Patent No. 10-0536841, which is referred to as a "light emitting device using a light guide plate"). 1 to 5 show an example of a conventional edge light source device. 1 is an exploded perspective view of a surface light emitting device using a conventional lamp unit, Figure 2 is an assembled perspective view of Figure 1, Figure 3 is a cross-sectional view taken along the line A-A of FIG. 4 is an enlarged view of part I of FIG. 2.

The light source device 20 may be disposed on only one side of the light guide plate or may be disposed on two opposite sides as shown. The light source device 20 may be configured by only one lamp unit or may be configured to be long by connecting several lamp units 20a and 20b in a line as illustrated. That is, since one lamp unit 20a or 20b is limited by the length of the lamps 40a and 40b employed, the length of the light guide plate 50 is longer than that of one lamp unit 20a or 20b. In this case, as illustrated, the long light source device 20 is configured by connecting several lamp units 20a or 20b in a line to match the length of the light guide plate 50. One lamp unit 20a or 20b includes a plurality of straight-type lamps 40a and 40b disposed one or a plurality of light reflection shades of lamp housings 26a and 26b and pipe members integrally connected to the rear or side thereof. The circuits providing the driving power of the lamps are each equipped with power supply units 28a and 28b embodied on a printed circuit board, thereby having an integrated module structure. Both ends of the lamps 40a and 40b are intermittently fixed to lamp holders 42a, 42b, 42a 'and 42b' mounted at both ends of the light reflection shades of the lamp housings 26a and 26b.

Both ends of the first lamp unit 20a and the second lamp unit 20b are closed by finishing pieces 22a, 24a, 22b, and 24b provided with electrode terminals that allow electrical connection to each other while closing the pipe members, respectively. It is. The first lamp unit 20a and the second lamp unit 20b are provided with electrode jacks 23a provided with connecting jacks 30 inserted into the finishing pieces 24a and 22b of the two lamp units 20a and 20b by approximately half. And 23b). When the two lamp units 20a and 20b are connected in a line, the facing pieces 24a and 22b of the two lamp units 20a and 20b face each other, and also the two lamp holders 42a and 42a 'facing each other. ) Is also faced. Thus, as shown in FIG. 4, there are no lamps 40a and 40b in the connecting portion X of the lamp units 20a and 20b, and finish pieces 22b closing the openings of the lamp units 20a and 20b. 24a) and lampholders 42a and 42a 'that hold both ends of the lamps 40a and 40b. Accordingly, the connecting portion X of the two lamp units 20a and 20b is a non-light source region, which generates a blind spot 60 where no light is emitted toward the front, and the blind spot 60 of the light guide plate 50 is formed. The luminance is lower than that of the rest of the regions, resulting in a black color.

FIG. 5 is a photograph showing an actual use state of a surface light emitting device constructed using such a conventional lamp unit. The surface light emitting device implemented herein divides eight lamp units into two groups and four lamp units of each group in a row. It is installed on the upper and lower sides of the light guide plate 50 by connecting. As can be clearly seen from the photograph, it can be seen that the light guide plate 50 in front of the connection portion X of the two lamp units appears black compared to the light guide plate area in the section where the lamp exists.

As described above, according to the conventional lamp units 20a and 20b, the lamps 40a and 40b do not extend to the ends of both ends of the lamp units 20a and 20b, so that light is not emitted from both ends thereof, and thus the light guide plate is 50 also had a disadvantage in that the front region 60 of the connecting portion X at both ends generates photostains that appear significantly darker than other regions.

Accordingly, an object of the present invention is to devise to solve the above-mentioned drawbacks, by adding auxiliary light sources at both ends of the lamp unit so that there is no non-light emitting section in the entire length of the lamp unit, the brightness of the connection of the two lamp units It is to provide a lamp unit that can prevent the phenomenon of being lowered.

Another object of the present invention is to provide a surface light emitting device to which the lamp unit is applied.

In the lamp unit according to the present invention for achieving the above object is a lamp unit in which both ends of the straight-type lamp is mounted on the lamp housing while holding the non-light emitting section in which both ends of the lamp are not exposed. Auxiliary lamps are further installed in the non-light emitting periods so that the lamps and the auxiliary auxiliary lamps emit light together to emit light between the entire lengths of the lamp units.

According to the embodiment, both ends of the lamp unit is provided with a closing portion for connecting by the other lamp unit and the connection jack, both ends of the lamp having lamp holders coupled to the closing portion, the two opposite to each other Preferably, the auxiliary lamps are attached to two adjacent lamp holders mounted on the ends of the two lamp units.

According to the exemplary embodiment, the auxiliary lamp includes a substrate attached to the connection part and at least one light emitting body provided on the substrate, and draws an electric wire from the substrate and connects the electric power supply part of the lamp unit to supply operating power. It is desirable to receive.

According to the above embodiment, both ends of the lamp unit are provided with finishes, and both ends of the lamp are directly coupled to the finish parts, and a light emitting body of the auxiliary lamp is inserted into a portion thereof, and the wire is connected to the power supply unit of the lamp unit. Is preferably connected to.

In order to achieve the above object, the surface light emitting device further includes auxiliary lamps at both ends of the lamp unit to which the lamp is not exposed, so that the lamp and the auxiliary lamp emit light together so that light is emitted between the lamps of the entire length of the lamp unit. A light source device in which a plurality of lamp units are connected in a row; A light guide plate that scatters and reflects light incident to the side from the light source device and emits the light toward the front; And a frame for coupling the light source device to at least corresponding both sides of four sides of the light guide plate.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

6 is a schematic configuration diagram of a lamp unit according to the present invention, and FIG. 7 is a view of the auxiliary lamp as viewed in the direction II of FIG. 6. 8 is a detailed cross-sectional view taken along the line B-B in FIG. 6. 9 is an exploded perspective view showing in more detail the coupling structure of the auxiliary lamp in the lamp unit of the present invention.

End portions 112 and 122 are formed at both ends of the lamp units 110 and 120, and the lamps 130 and 140 are not exposed in the finish portions 112 and 122. Specifically, both end parts 112 and 122 are portions in which the lamp holders 132 and 142 are positioned, and thus non-light emitting regions are formed at both ends of the lamp units 110 and 120 due to the lamp holders 132 and 142. In the present invention, the auxiliary lamps 150 are attached to both ends of the lamp units 110 and 120 to remove the non-light emitting area. The auxiliary lamp 150 is preferably attached to the lamp holder 132, 142 located at both ends of the lamp unit (110, 120).

In particular, when connecting two lamp units in a line as in this embodiment, the connection portion (T) of the first lamp unit 110 and the second lamp unit 120, as shown in Figure 6 the first lamp unit The finishing part 112 of the 110 and the finishing part 122 of the second lamp 120 are brought into close contact with each other and connected by a connecting jack (not shown). Then, as described above, the finishing part 112 and the finishing part 122 are described. ) Are closely attached to each other, so the lamps 130 and 140 do not exist, resulting in a large non-light emitting area. As a result, the adjacent portion of the display panel adjacent to the connection portion T, for example, the light guide plate 160, is black and does not receive light. In the present invention, the auxiliary lamp 150 that emits light in the same direction as the emission direction of the lamps 130 and 140 is provided in the connection portion T in which the pair of lamp units 110 and 120 are aligned to compensate for the section where the lamp is broken. do. Specifically, the auxiliary lamp 150 is attached to the front surfaces of the finishing parts 112 and 122 of the first and second lamp units 110 and 120 to mount the light to the first and second lamp units 110 and 120 at the connection part T. It is emitted in the same direction as the first and second lamps 130 and 140. Then, the first lamp 130, the auxiliary lamp 150, the second lamp 140 is broken in a row by connecting the auxiliary lamp 150 to fill the gap between the first, second lamp 130, 140 is not connected. The light is emitted without it. The auxiliary lamp 150 has a light emitting body 154 is formed on the substrate 152, the light emitting body 154 may be composed of one or two or more. Preferably, as shown in FIG. 7, two light emitters 154 may be provided, one at each finishing portion 112 and 122. Of course, when the widths of the finishing parts 112 and 122 are wide and the connection part T is wide, it is preferable to increase the light emitter 154 in proportion thereto to maintain uniform luminance. As the auxiliary lamp 150, an LED (Light-Emitting Diode) is suitable. Further, the auxiliary lamp 150 is preferably selected to use the same or similar brightness in consideration of the brightness of the lamps (130,140). This allows light of uniform brightness to be emitted between the light bulbs including the connection portion T of the lamp units 110 and 120 to maintain uniform brightness of the display.

The auxiliary lamp 150 may be attached to the front of the finishing parts 112 and 122 of the lamp units 110 and 120 in various ways. Preferably, the auxiliary lamp 150 may be finished by applying an adhesive 156 to the back surface of the substrate 152 of the auxiliary lamp 150. A method of adhering to the front surfaces of the parts 112 and 122 may be preferable. On the other hand, although not shown here, the lamp holders 132 and 142 of the finishing parts 112 and 122 which form the connection part T of the lamp units 110 and 120 to the substrate 152 of the auxiliary lamp 150 with a small screw or bolt. It may be fixed at

The auxiliary lamp 150 may protrude slightly from the front of the lamp housings 114 and 124 of the lamp units 110 and 120 when the auxiliary lamp 150 is attached to the front of the finishing parts 112 and 122 of the lamp units 110 and 120 as described above. As described above, the receiving groove 162 is provided by removing a portion of the light guide plate 160 corresponding to the auxiliary lamp 150 to accommodate the auxiliary lamp 150.

The auxiliary lamp 150 is connected to the power supply terminals 116 and 126 provided inside the lamp units 110 and 120 to receive operating power. The operating power is supplied together with the lamps 130 and 140 to cause the auxiliary lamp 150 to be turned on / off in synchronization with the on / off operation of the lamps 130 and 140. The auxiliary lamp 150 is connected to the power supply units 116 and 118 of the lamp units 110 and 120 by the wire 158 to receive the operation power, and the wire 158 of the auxiliary lamp 150 is preferably shown in FIG. 8. As shown in the wire 170, the wire mounting groove 172 is preferably provided by mounting and protecting.

FIG. 10 is a state diagram of a surface light emitting device using a lamp unit according to the present invention, and FIG. 11 is an enlarged view of a portion III of FIG. 10. In particular, the region of light emitted from the lamp and the auxiliary lamp in Figure 11 is shown by the dashed line.

FIG. 10 illustrates a state in which the light source device 100 including the lamp units is mounted on the upper and lower ends of the surface light emitting device 200 and used as a light source. As shown in FIG. 10, the lamp units 110 and 120 described above in detail are arranged in a line. Subsequently, the connected light source device 100 is disposed on the upper and lower ends of the light guide plate 160 to be coupled to the frame 210 to constitute the surface light emitting device 200. Then, the light source device 100 emits light toward the side of the light guide plate 160 adjacent to the light source device 100, and the light guide plate 160 scatters and reflects the light incident on the side to emit light forward.

Particularly, the light source device 100 attaches the auxiliary lamp 150 to the connection portion T to which the lamp unit 110 and the lamp unit 120 are connected, so that the finishing parts 112 and 122 of the two lamp units 110 and 120 are attached. Subsequently, by emitting light having the same brightness as that of the lamp in the blind area where the lamps 130 and 140 do not exist, that is, the connection portion T, as shown in FIG. 11, the non-light emitting section in which the light is not emitted can be removed. This causes the sub-lamp 150 to fill the gap between the lamp 130 and the lamp 140 to produce an effect as if the lamps are connected in one, thereby irradiating light without disconnection between the bulbs of the light guide plate 160 to uniform the display. One brightness is guaranteed.

Figure 12 is a partial perspective view showing another embodiment of the lamp unit according to the present invention, since both ends of the lamp unit have the same structure, only one end of the lamp unit is shown here.

The auxiliary lamp 150 'is bonded to the surface of the finish of the lamp unit with adhesive as in the previous embodiment, and the lamp 140' is directly connected to the finish 122 'by connecting both ends of the lamp 140' as in the present embodiment. While removing the holder parts, the auxiliary lamp 150 'is also directly integrally modularized to the finishing part 122', thereby reducing component parts and simplifying assembly. Preferably, the auxiliary lamp 150 'is provided with a mounting groove 122a' in which a predetermined portion of the light emitting body 154 'of the auxiliary lamp 150' is inserted into the side of the finishing part 122 ', and finished. The electric wire 158 'is drawn out of the unit 122' and connected to the power supply unit 126 'provided in the lamp unit 120'. In this case, the substrate of the auxiliary lamp 150 ′ may be removed or may be configured to be stored in the finish portion 122 ′.

As described above, the light source device which reinforces the brightness of the lamp unit connection unit according to the present invention prevents the brightness from dropping at the connection unit of the lamp units in which the lamp is not placed by installing an auxiliary lamp at the connection unit of the lamp units. The connecting portion can maintain a uniform brightness with other parts of the lamp unit in which the lamp is located. This ultimately has the effect of improving the quality by irradiating light without a broken section between the light guide plate to ensure uniform brightness in the display. As a result, there is an advantage to increase the advertising effect can be clear and clean advertising.

In the above embodiment has been exemplified an embodiment of removing the blind area by attaching the auxiliary lamp to the connection portion of the lamp unit and the lamp unit in a row, in addition to this can be attached to the end of the end of the lamp unit to achieve the same effect.

The embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment, the present invention Various changes and modifications are possible within the scope without departing from the spirit of the invention, as well as other equivalent embodiments.

Claims (6)

A lamp unit in which a non-light emitting section in which both ends of the straight lamp are held and held by both ends of the lamp is not exposed, wherein the auxiliary lamp is further installed in the non-light emitting section. The lamp unit, characterized in that the light is emitted between the length of the lamp unit by the lamp and the auxiliary lamps along the lamp. 2. The lamp unit of claim 1, wherein ends of the lamp unit are provided with ends for connecting the other lamp units to each other by a connecting jack, and both ends of the lamp unit are provided with lamp holders coupled to the ends, and are connected to each other. And the auxiliary lamps are attached to two adjacent lamp holders mounted on the ends of the two lamp units. 3. The auxiliary lamp of claim 2, wherein the auxiliary lamp includes a substrate attached to the lamp holder portion and at least one light emitting member provided on the substrate, and draws an electric wire from the substrate and connects the power supply to the power supply unit of the lamp unit. Lamp unit, characterized in that the supply. The lamp unit of claim 1, wherein ends of the lamp unit are provided with finish parts, and both ends of the lamp are directly coupled to the finish parts, and a light emitting body of the auxiliary lamp is inserted into a part of the lamp unit, and the wire is connected to a power supply unit of the lamp unit. Lamp unit, characterized in that connected. Auxiliary lamps are further provided at both ends of the lamp unit to which the straight lamps are not exposed, so that the lamp unit and the auxiliary lamps emit light together, so that a plurality of lamp units are arranged in a row so that light can be emitted between all the lengths of the lamp units. Light source device; A light guide plate that scatters and reflects light incident to the side from the light source device and emits the light toward the front; And And a lamp unit including a frame for coupling the light source device to at least a corresponding side surface of at least four sides of the light guide plate. The surface light emitting device using a lamp unit according to claim 5, wherein an accommodating groove for accommodating the auxiliary lamp is formed in a portion of the light guide plate corresponding to the auxiliary lamp.

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